Am currently looking at a 1985 380SL for my wife, maybe to resell.
The usual stuff, paint, some seals, etc. Transmission shifts wonderfully, starts well (although a slightly rough idle). No visible smoke, hesitation, power lag, stumble.
The only real concern I had was inside the oil cap, there was evidence of water mixed with the oil. There was condensation in the breather tube coming form the left side valve cover. We did not get the car really warm during the test drive (my bad). The oil has not been changed in a year and there was no evidence of water on the dipstick.
The question is - walk away or not?